Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1e63b6d9eea371…

MALICIOUS

PDF

68.7 KB Created: 2021-02-12 04:36:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c4a3f382fcda9c079aebf37cf5f8597a SHA-1: 40c023b9bf1c76e3ae6abce63af7094d7fd3ae98 SHA-256: 0b1e63b6d9eea3719d2f87d5542bddc1be08d24d2c08957b947e7a7fbe0705f6
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, characteristic of a link farm designed to attract traffic or distribute malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and a machine learning classifier also flagged it as malicious. The presence of a download button lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=bobby+movie+box+apk+download PDF link annotation
    • https://pazopoxe.weebly.com/uploads/1/3/5/2/135293382/muvolukoralin.pdfIn PDF document text
    • https://sadozilodefizon.weebly.com/uploads/1/3/4/6/134659806/2851749.pdfIn PDF document text
    • https://cdn.sqhk.co/zokuwagopole/hiRphfT/zombie_dead_target_killer_survival_attack_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/zjb5hc6/grid_autosport_mod_apk_1._6._1rc2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tejovixija.rf.gd/android_auto_wireless_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/thesis_about_abortion_in_the_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/98811003400.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/xudivodiviketuduxefike.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/xalokilavilewufaki.pdfIn PDF document text
    • http://xutulatovemi.epizy.com/suwavofopefigesiwabik.pdfIn PDF document text
    • http://povuputuk.epizy.com/67868858213.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/candy_store_heathers_piano_sheet.pdfIn PDF document text
    • http://gesovupa.epizy.com/oh_private_browser_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/55820476802.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F5 5404 bytes
SHA-256: 58157d1cb7d5ee6e9df3ba6290132a21dd8adfa5d7e51d2edf8a63ad8e9bc889
font_01_sfnt_off0000e362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE362 10184 bytes
SHA-256: 49525a7384d6d171482f9e53ab9c48bea4bdf61f16a271c6399a6691a08b40a6

Open this report in the interactive analyzer, or submit your own file for analysis.